Joint Publishing (Chinese: 三聯書店), also known as Sanlian Press or SDX Joint Publishing, is a book store chain and publisher founded at Queen's Road Central in Hong Kong on 18 October 1948. Joint Publishing (Hong Kong) is one of major book store chains in Hong Kong and currently a subsidiary company of Sino United Publishing (Holdings) Limited. The Mainland China branches of the book store chain, such as SDX Joint Publishing and Shanghai Joint Publishing were owned by separate holding company of the Chinese government.